This document discusses cloud computing, including its definition as internet-based computing using shared resources and services provided on demand. It outlines the key characteristics of cloud computing like on-demand self-service, broad network access, and resource pooling. The document also describes different cloud service models including infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). Finally, it discusses some major advantages and disadvantages of cloud computing.

1. Under the guidance of:
k v mahesan
Associate professor
Dept. of TCE
-The New Age Of Computing….
CLOUD COMPUTING
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2. WHAT IS CLOUD COMPUTING
Cloud computing is internet–based
computing, whereby:
 shared resources
Software
information
are provided to computers and others devices on demand,
like the electricity grid.
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3. NEED FOR CLOUD COMPUTING
 Automatic software updates
 Security
 Document control
 Work from anywhere
 Rely on speed & stability of the Cloud provider
 Flexibility
 Savings on Data Centre Space, Power and Cooling
 Environmentally friendly
 Reduces TCO
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4. 5 ESSENTIAL CHARACTERISTICS
1. On-demand self-service
2. Broad network access
3. Resource pooling
4. Rapid elasticity
5. Measured service
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5. SERVICE MODELS
1. Infrastructure (IaaS)
2. Platform (PaaS)
3. Software (SaaS)
4. Physical Servers
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6. SERVICE MODELS
Software as a Service (SaaS)
Platform as a
Service (PaaS)
Infrastructure as a
Service (IaaS)
Virtual Servers
Virtual Storage
Network Routers
Java Runtime
Web 2.0 Runtime
LAMP / WAMP
Corporate Email
Business Processes
CRM, ERP, HR
Physical Servers
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7. MODES OF CLOUDS
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i. Public Cloud.
ii. Private Cloud.
iii. Community Cloud.
iv. Hybrid Cloud(Combined Cloud).

8. CLOUD COMPONENTS
It has three components
1. Client computers
2. Distributed Servers
3. Datacentres
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9. DATACENTER
It is collection of
servers where
application is placed
and is accessed via
internet.
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10. CLIENTS
Clients are the device that the end user interact
with cloud.
three types of clients:
1.) Mobile
2.) Thick
3.) Thin (Most Popular)
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11. DISTRIBUTED SERVERS
Often servers are in geographically
different places, but server acts as if they
are working next to each other.
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12. ADVANTAGES
 Lower computer costs
 Improved performance
 Reduced software costs
 Instant software updates
 Improved document format
compatibility
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 Unlimited storage capacity
 Increased data reliability
 Universal document access
 Latest version availability
 Device independence

13. DISADVANTAGES
Requires a constant Internet connection
Does not work well with low-speed connections
Features might be limited
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14. INSTITUTE
S
EDUCATIONAL
Educational Institutes
a) Cloud-based storage
b) Virtual Hands-on Laboratories (VHLs)
c) Software as a Service (SaaS)
d) Platform as a Service (PaaS)
e) Infrastructure as a Service (IaaS)
Health Sector
Agriculture
SectorHealth
Agriculture
APPLICATIONS
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15. CLOUD COMPUTING SERVICES
Amazon Web Services
a) Elastic Compute Cloud (EC2)
b) Simple Storage Service (S3)
c) Simple Queue Service (SQS)
d) Simple Database Service (SDB)
Google App Engine
 Google App Engine lets you run your web applications on Google's infrastructure.
 App Engine applications are easy to build, easy to maintain
 Automatic scaling and load balancing
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16. CLOUD PROVIDERS – MAJOR ACTIVITIES
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17. CLOUD PROVIDERS – A BIRDS EYE VIEW
Infrastructure
as a Service
Platform
as a Service
Software
as a Service
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18. REFERENCES
1. http://www.infoworld.com/article/08/04/07/15FE-cloud-
computing-reality_1.html,
“What Cloud Computing Really Means”
2. http://www.spinnakerlabs.com/CloudComputing.pdf
“Welcome to the new era of cloud computing PPT”
3. http://www.johnmwillis.com/
“Demystifying Clouds” - discusses many players in the
cloud space
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